Warp-dyeing machine.



W. F. HASKELL. WARP DYEING MACHINE.

APPLIOATIOH FILED PEB.17,1912.

Patented June 18, 1912.

Inward or:

COLUMBIA PLANoonnn (0..WASNINGTON. D. (1v

/ warp will he completely sulunergei'l in the WALTER F. HASKELL, OF WESTBROOK, MAINE.

WABP-DYEING MACHINE.

Specification of Letters Patent.

Patented June 18, 1912.

Application filed February 17, 1912. Serial No. 678.201.

T 0 all 21:11am it may concern:

Be it known that I, WALTER F. HASKELL. of Westbrook, in the county of Cumberland Q and State of Maine, have invented certain new and useful Improvements in \Varp-Dye ing Machines, of which the following is a specification.

My invention relates to a machine or a[)' paratus for dyeing warps.

In the process of dyeing cotton yarn in warps or chains as hitherto practiced, the warp threads were collected or combined} in a strand or rope made up'of a plurality of the threads held together by a cord which was Wound loosely around the associated threads. This strand was dyed by passing it in a zigzag path one or more times through a vat containing the dye solution. The warp passed over guide rolls beneath the surface of the solution and thence over guide rolls usually above the level of the solution thus alternately dipping into the solution and then being exposed to the air. The exposure to the air between the periods of submersion caused a certain amount of evaporation and oxidation in some cases and thereby was liable to cause variation in the color from that produced in the trial dyeing by which the solution was compounded.

In making the trial dyeing the yarn was entirely submerged and kept submerged as long as was necessary. The effect on the complete warp was thus distinctly difierent in many cases from the efl'ect produced on the sample when the dyeing solution was the same.

The object of my invention is to produce an apparatus for dyeing warps in which the solution in its passage through the machine; in which a minimum quantity of solution may he used and a maximum time of submersion obtained so that it will be practicable to obtain shades of great depth with only a single passage through the machine; in which any reasonable quantity of solu- 5 tion above the minimum necessary to fill the pipes may be used; in which the hydro- 1 static pressure of a depth of water much i greater than usual will be utilized to cause very complete penetration of the yarn by the dye solution; and in which there will be an effective circulation of the dye solution.

In carrying out my invention I make use of a vat constructed in the form of a con- 3 tinuous coil through which the warp isi drawn, guide rolls being located at the bends in the coil. A supply tankconnects with the inlet end of the coil where the warp enters and an overflow or drip tank is connected with the other end and provided with squeeze rolls for expressing the surplus solution.

My invention may best be understood by reference to the accompanying drawing, in which is shown a machine constructed according to my invention.

In the drawing. Figure 1 represents a general vertical section through the machine taken from end to end. and Fig. 2 is a section on the line w a: of Fig. 1.

The warp w is drawn through a vat cong structed in the form of a continuous coil and provided with guide rolls in the bends of the coil.

As here shown, I form a continuous vertically disposed coil with hollow heads I) on the top and bottom, these heads being united by straight sections of pipe 6, the heads and the pipes forming a continuous passageway fer the passage of the warp. J ournaled in each head is a guide roll 0 over which the warp strand passes and the edges of the rolls are generally in line with the centers of the pipes.

Means are provided whereby the coil may be kept full of dye solution and the warp he kept entirely submerged while it is passing through.

As here shown, the coil is so arranged that two end pipes are open at their upper ends and connected with the upper end of the inlet pipe is the supply tank a through which the solution is introduced into the coil. The war w is drawn from the receiving car w and passes over suitable guide rolls to the tank a and thence into the coil as described.

To the upper end of the outlet pipe is connected an overflow tank a which should be placed at a higher level than the tank (1 since it is constantly receiving a supply of liquid carried with the warp. The tank a is provided with a pair of squeeze rolls 7: for squeezing out the surplus dye.

A return pipe 9 connects the overflow tank with the supply tank so that the surplus dye which is squeezed out will be re- 1 turned to the supply tank.

Means are provided for washing the warp strand at once, it' desired after it passes through the dyeing vat and as here shown I make use of a single section of coil e of the same general construction as the vat. One of the ipe sections of the coil e having anover ow 6' receives the warp after the latter has passed over the guide roll 2' and the other pipe connects with the drip tank 7' which is provided with the squeeze rolls 7', and water supply cock 9'. From the squeeze rolls the warp passes over the guide rolls k to the receivin car w Means are provide for keeping the dye hot as it passes through the coil. For the purpose of heating I provide a steam jacket f which makes a ti ht joint with the pipes b. This steam jac et may be he t filled with steam durin' the operation 0 dyeing or hot water mayie used when a lower temperature is needed.

In the operation of my machine the warp strand is fed through the dyeing coil and the washing coil, being drawn along by the rolls h and j, the dyeing coil being filled with dyeing solution. The pipes 12 being but little larger than the warp strand a relatively small amount of the solution is necessary to fill the vat, the warp is kept entirely submerged during the operation and not allowed to be exposed to the air. As a result, the color of the entire warp corresponds with the color of the trial dyeing which is entirely submerged and not allowed to come to the air.

The length of the coil and velocity of the warp as it passes through the dye are such that the yarn will be thoroughly saturated witlh the dye during its passage through the col During the operation of the machine the concentration of the solution will be kept up by addition of dye stuff as desired to the supply tank. The warp may be passed through only once or several times consecutively as may give the best results.

It will be seen that in the operation of washing as herein shown, the water is flowing in the direction opposite to that at which the warp is moving and the warp finally emerges from the cleanest water. In the case of dyeing with sulfur colors there is a certain amountof sodium sulfid carried by the warp over to the washing tank. This is desirable in eifecting a thorough washing of the warp when using sulfur dyes. It is also desirable that the wash water should be some might be for loose warp threads to wind about the rolls e I provide each roll with a guard or scraper (l which prevents the roll from clogging from this cause and causes the loose yarn to be carried along by its strand.

It will be seen that the amount of solution may be increased if desired above the necessary minimum by simply increasing the capacity of the supply tank correspondin ly. The length of the vertical pipes will be limited practically only by the height of the building, in which the machine may be installed. A depth of twenty-five or thirty feet would not be excessive thus giving at the bottom an approximate hydrostatic pressure of from twelve to fifteen pounds per square inch, which will force the dye liquor into the interior of the yarn very thoroughly.

I claim 1. A warp dyeing machine including a continuous coil through which the warp passes for containing the dye solution, said coil consisting of a series of hollow heads, guide rolls within said heads for guiding the warp, tubes through which the warp passes from roll to roll connecting said heads and means for supplying dyeing solution to said coil.

2. A warp dyeing machine including a continuous coil through which the warp passes for containing the dyeing solution, said coil consisting of a series of hollow heads, guide rolls within said heads for guiding the warp, tubes through which the warp passes from roll to roll connecting said heads and a supply tank for dyeing solution connecting with said coil.

3. A warp dyeing machine including a continuous coil through which the Warp passes for containing the dyeing solution, said coil consisting of a series of hollow heads, guide rolls within said heads for guiding the warp, tubes through which the warp passes from roll to roll connecting said heads, a supply tank for dyeing solution connecting with one end of said coil, an overflow tank connected with the other end of the coil and a pair of squeezing rolls in said overflow tank for squeezing out theexcess dye.

4. A warp dyeing machine including a continuous coil through which the warp passes for containing the dyeing solution, said coil consisting of a series of hollow heads, guide rolls within said heads for guiding the warp, tubes through which the warp passes from roll to roll connecting said heads, a supply tank connectin with one end of said coil, an overflow tan connected with the other end of the coil, a pair of squeezing rolls in said overflow tank for squeezing out the excess dye, and a return pipe connecting the overflow tank with the supply tank.

5. warp dyeing machine including a menses continuous coil through which the warp passes for containing the dyeing solution, said coil consisting of a series of hollow heads, guide rolls within said heads for guiding the warp, tubes through which the warp passes from roll to roll connecting said heads, a supply tank connecting with one end of said coil, an overflow tank connected with the other end of the coil, a pair of squeezing rolls in said overflow tank for squeezin out the excess dye, and a washing tank en squeeze rolls beyond said overflow tank for washing the warp.

In testimony whereof I have afixed my signature, in presence of two witnesses.

WALTER F. HASKELL.

Witnesses:

S. W. BATES, C. B. CRnIoH'roN.

Gopienot this patent may be obtained for flve cents each, by addressing the Commissioner of Petentn,

Washington, D. G. 

